"Objects change their motion only when a net force is applied."
Free body diagrams
inertia
aristotelian misconceptions
weight -> acceleration
natural state vs friction
planetary motion
"Laws of motion are used to calculate precisely the effects of forces on the motion of objects."
Kinematics
Vectors
sigma F = ma
friction
constant vs variable forces
"The magnitude of the change in motion can be calculated using the relationship F = ma, which is independent of the nature of the force."
equilibrium
free-body diagrams
"Whenever one object exerts force on another, a force equal in magnitude and opposite in direction is exerted on the first object."
horse cart misconception
ball and earth mutual attraction
wall and hand
friction and walking
"Objects change their motion only when a net force is applied."
Free body diagrams
inertia
aristotelian misconceptions
weight -> acceleration
natural state vs friction
planetary motion
"Laws of motion are used to calculate precisely the effects of forces on the motion of objects."
Kinematics
Vectors
sigma F = ma
friction
constant vs variable forces
"The magnitude of the change in motion can be calculated using the relationship F = ma, which is independent of the nature of the force."
equilibrium
free-body diagrams
"Whenever one object exerts force on another, a force equal in magnitude and opposite in direction is exerted on the first object."
horse cart misconception
ball and earth mutual attraction
wall and hand
friction and walking